Dust-collector for grinders.



M. B. GIBERSON. DUST OLLEOTOB FOB GBINDEBS.

Ammonium FILED ooT.1s. 191a.

Pawnee@ App; 28, im.

2 SHEETS-SHEET 1.

M. B. GIBERSDN. DUST COLLEGIQR.- POB GRINDERL APPLICATION FILED 00T. 1g. 191s.

Patented A1z'.28,.1914v 2 SHEETS-SHEET 2.

ATES .naar 'raro' AN, ASSIGNOR TO MONARCH STEEL CAST- INGS COMEANY, OF DETROIT, MICHIGAN, A CDRPORATION O F MICHIGAN.

nUsr-coLLncror. roza camiones.

incassa.

Application filed ctober 13, 1913. Serial No. 794,997.-

To all whom it may concern Be it known that I, MASON B. G rnnnsoN, a citizen of. the United States of America,

residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Dust- Collectors orGrinders, of whichthe following is a speoication, reference 'being had therein .to theaccompanying drawings.

The invention relates to grinding machines of that type in Vwhich the grinderwhcel is mountedl upon a exible arm, carrying the driving connections, which permits of its being adjusted in various positions in relation to the work.

It is the object of the invention to provide such a grinder with dust-collecting means .which Vwill not in any way interfere with the freedom of adjustment. I

In the drawings: Figure l is a perspective view of the grinder; Fig. 2 is a sectional side elevation of the grinder-wheel and dustcollecting hood; Fig. 3 is a plan View therefof; and Fig. 4 is a plan of the jointed arm of the grinder-frame, showing the connection to the dust-removing tool.

In the present state of the art, grinderi wheels for use in the hand-nishing of castings and for similar purposes have been mounted upon universally-jointed frames, which also carry the driving belts. It is also common with stationary grinders to inclose the wheel by a hood for collecting the dust, which latter is, drawn away through a conduit by suction." With my improved construction, I have provided a exiblymounted grinder-wheel with a dust-collect-' ing hood and exhaust conduit, without intertering with the flexibility of the frame, the specific construction being as follows A is the grinder-wheel, mounted upon an arbor B, journaled in bearings C upon a bifurcated frame D.- This frame D is connected with an arm E extending to a bifurcated frame or yoke F, which in turn is of the grinder-wheel A.

Tol collect the dust from the grinder, the wheel A is rovided with a hood K, preferably tormed)integral with the #yoke frame D and provided 'with a detachable extension portion K', which may be removed for in-v sertion of the grinder-wheel. The arms E and Il are formed of tubes and the former is connected at its outer end with the hood Specification of Letters Patent. Patentgd Apr, 28 1.914,

K, while its rear'end has a swiveled engagef ment with the yoke frame F. The tube also preferably projects beyond the swiveled bearing into the space within the yoke and engages a nipple L, which is non-rotatively connected to the yoke frame and is coupled` bya flemble conduit M with a corresponding nipple at the end of the arm H. Thus the flexing or the hinge connection between the yckes F and Gr is not interfered with, and a continuous conduit for thc passage ot the dust 1s maintained by the tubes E and H and connecting flexible conduit lll. A similar flexible connection isformed between the upper end or' the tube II and the stationary exhaust conduit.

The grinder-Wheel is driven by the usual belt-and-pulley drive connection indicated at N, and to permit of tightening the belts when they become .loose from stretching, an adjustment is provided for the length of the arms E and H. This is preferably ,formed by connecting the nip-ple L with the yoke frame F by bolts O having nuts P which when adjusted willl move the nipple and tubular arm outward.-

"With the construction as described, when suction is placed upon the exhaust conduit, an air current will be drawn through the hood, tubular arms E and H and their connecting flexible conduits, to carry away the dust from the grinder.

As the conduits are formed through the swiveled arms E and H, and as the ieXible connections between these conduits also ermit of swiveling, it is obvious that the eedom ot' movement of the jointed fra-me is not in any way impaired.

That I claim las my invention is: .v 1. The combination with a grinder-wheel,

of a hood for inclosing said wheel, a jointed` frame' on which said wheel and hood' are mounted, and an lexhaust conduit leading from said hood through said jointed liframe andrpermitting the flexin `of, the latter.

2. The combinationwit a @finder-wheel, of a hood inclosing said wheel, a jointed frame on which said wheel and' hoodfare "mounted, including a pluralityjof pivotallyconnected yoke frames, andtubular `connecting aifins'liaying a siviveled connection' with said yokes, forming an exhaust Conduit connected with said hood;

' 3. rEhe Combination with a grinder Wheel, of a, hood oiinelosing said Wheel, :L yoke frame on which said. hood and Wheel are mounted, e 'tubular arniextending from said yoke frame and connected with said hood, e hinged yoke at the opposite end of said tubular arm, having a, swiveled connection theiewith, and a flexible conduit connected 'with said tube Within said yoke.

4. The combination with e grinder Wheel, 'of n hood for inelosingfsaid Wheel, a yoke iame on which said hood and Wheel are mounted, a. 'pair of hinged yoke frames, tlmlzn arms Connected respectively to said hinged yoke frames, one of said arms being connected at'its opposite end to the yoke frame supporting said giindei" Wheel and to the hood thereof, and e exibleiconduit oonneeting said tubular arms, permitting of .the

-hinging oi` swinging nie-vement of said yoke frame.

with a grinderlwheel e s hood for inclosing said Wheel formed integral with sid yoke, and :i tubular arm supporting said yoke and forming a conduit connected With said hood.

7. The combination with a grinder-Wheel of a hood for inelosing said Wheel, a yoke frame on which said hood and Wheel aie mounted, a second yoke framea tubular erin connected to said first yoke frame and swivelcd in said second yoke frame, a belt and-pulley drive connection extending between said yoke frames,j:1nd means tonadjusting said tubular :i1-m longitudinally in `its swiyeled bearing to take up slack from said .drive-belt connection,

8. The combination with a grinder-Wheel of a-hood for inclosing said Wheel, a'tubulai arm extending from said hood, a hinged yoke with which said tubular arm has a svv'iveled engagement, the end of said arm projecting within the yoke7 :i flexible conduit a nipple for connecting said flexible conduit with the end of said tubulin' arm, a`

belt-and-pnlley drive connection extending between said grinder-Wheel and hinged yoke, and adjustable connecting meansA between' said nipple and hinged yoke for lengthening said-tubular 'arm te take up. slack in said belt-and-pulley Connection.

In testimonyn'hereof I allix my signature in presence of two Witnesses.

MASON B. GIBERSON. Witnesses JAMES P. BARRY, H, E. BOWMAN. 

